3-layer Extrusion Blow Die
This all-electric three-layer hollow molding machine, capable of producing 20-liter jerry cans (portable oil drums), aligns with today's environmentally friendly, low-energy-consumption, low-carbon footprint, and 3R (Reduce, Reuse, Recycle) principles. It boasts low maintenance costs and saves over 25% on energy compared to traditional hydraulic machines, making it a truly green, energy-efficient, and intelligent machine.
Notably, this model can process more recycled material in the middle layer of its three-layer design. Through improved shape design, it achieves a 30% weight reduction without compromising quality or stacking stability. The three-layer structure also reduces colorant usage by 60%, resulting in significant annual plastic savings and effective cost reduction. Furthermore, reduced plastic usage in each process naturally lowers heat, and the rapid cooling cycle improves productivity.
The purpose of a three-layer hollow fiber packaging machine is to save costs, improve barrier properties, increase rigidity, and protect the contents. It is commonly used in the following markets:
1. Oil bottles, lubricating oil bottles
2. Pesticide bottles
3. Detergent bottles
4. Milk and food bottles
5. Chemical containers
6. High-barrier packaging (EVOH multi-layer)
Schematic diagram of a three-layer co-extrusion hollow molding machine
(3-layer flow channels)
Middle Layer (Layer B / Core)
Inner Layer (Layer C / Skin)
Examples of common function allocations at each layer
| Layer | Technology Name | Function | Common Materials |
|---|---|---|---|
| Outer Layer A | Skin Layer | Appearance, color, scratch resistance | HDPE / PP / PETG |
| Middle Layer B | Core Layer | Strength, barrier properties, cost reduction using recycled materials | Recycled PE / EVOH / PA / Calcium filler |
| Inner Layer C | Skin Layer | Safe contact with contents, leak prevention | Food-grade PE / PP |
